Norðdfjaðargöng project provides new connection between cities Eskifjörður and Neskaupstaður in the area of East fjords in Iceland. Metrostav A.S Útibu Á Íslandi is the contractor, and Pretec has had the pleasure of delivering rock securing and water and frost securing acessories to the project.
The total lenght of the project is 14km out of which is 7,56km in
Drill&Blast excavated tunnel with maximum overburden of almost 900m. The tunnel was driven in basaltic rock together with many weak intermediate sedimentary layers (tuffs, acient rivers and lake sediments). The main part of the excavations were done in profile T8 with cross section of 54,7m2.
Furthermore there were 14 emergency laybys excavated in cross section of 77,27m2. The tunnel was excavated from both portals in lenghts of 4.540m and 3.026m with average speed of 52m per week
from each portal.